.flexCenter(@direction:row){
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
}
.relative(@left:0px,@top:0px){ 
    position: relative;
    left: @left;
    top: @top;
}
.absolute(@left:0px,@top:0px){ 
    position: absolute;
    left: @left;
    top: @top;
}
.toBlock(@width:0px,@height:0px){ 
    display: block;
    width: @width;
    height: @height;
}
.center(@top:0){ 
    margin: @top auto;
}
.container{
    width: 1200px;
    margin: 0 auto;
}